You are viewing a plain text version of this content. The canonical link for it is here.
Posted to hdfs-issues@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2018/10/12 15:30:00 UTC
[jira] [Assigned] (HDFS-8893) DNs with failed volumes stop serving
during rolling upgrade
[ https://issues.apache.org/jira/browse/HDFS-8893?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daryn Sharp reassigned HDFS-8893:
---------------------------------
Assignee: (was: Daryn Sharp)
> DNs with failed volumes stop serving during rolling upgrade
> -----------------------------------------------------------
>
> Key: HDFS-8893
> URL: https://issues.apache.org/jira/browse/HDFS-8893
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Rushabh S Shah
> Priority: Critical
>
> When a rolling upgrade starts, all DNs try to write a rolling_upgrade marker to each of their volumes. If one of the volumes is bad, this will fail. When this failure happens, the DN does not update the key it received from the NN.
> Unfortunately we had one failed volume on all the 3 datanodes which were having replica.
> Keys expire after 20 hours so at about 20 hours into the rolling upgrade, the DNs with failed volumes will stop serving clients.
> Here is the stack trace on the datanode size:
> {noformat}
> 2015-08-11 07:32:28,827 [DataNode: heartbeating to <nn1>8020] WARN datanode.DataNode: IOException in offerService
> java.io.IOException: Read-only file system
> at java.io.UnixFileSystem.createFileExclusively(Native Method)
> at java.io.File.createNewFile(File.java:947)
> at org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceStorage.setRollingUpgradeMarkers(BlockPoolSliceStorage.java:721)
> at org.apache.hadoop.hdfs.server.datanode.DataStorage.setRollingUpgradeMarker(DataStorage.java:173)
> at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.setRollingUpgradeMarker(FsDatasetImpl.java:2357)
> at org.apache.hadoop.hdfs.server.datanode.BPOfferService.signalRollingUpgrade(BPOfferService.java:480)
> at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.handleRollingUpgradeStatus(BPServiceActor.java:626)
> at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:677)
> at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:833)
> at java.lang.Thread.run(Thread.java:722)
> {noformat}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org